APPLICATION OF THE CATALYST ON THE BASIS OF ZEOLITES FOR THE TRANSFORMATION OF OXYGEN CONTAINING COMPOUNDS TO LOW OLEFINS, AND ALSO THE METHOD FOR PRODUCING LOW OLEFINS

摘要

1. The use of a catalyst based on crystalline aluminosilicates for the conversion of oxygen-containing compounds to lower olefins, characterized in that the catalyst! characterized by a molar ratio of SiO2 / Al2O3 from 20 to 200 and! modified with 0.1-10 wt.% of an easily oxidizable metal (based on the corresponding metal oxide) and / or 0.05-5 wt.% of cerium (based on Ce2O3). ! 2. Use according to claim 1, characterized in that the catalyst is additionally modified with 0.1-1 wt% of a metal from the group consisting of Zr, Ag, W, La and Th. ! 3. Use according to one of the above claims, characterized in that the crystalline aluminosilicate has an average pore diameter of 0.5 to 1 nm, preferably 0.5 to 0.6 nm. ! 4. Use according to claim 1 or 2, characterized in that the aluminosilicate corresponds to the "pentasil" type. ! 5. Use according to claim 1 or 2, characterized in that the catalyst is obtained by means of the following steps:! (a) obtaining crystalline aluminosilicate, preferably of the "pentasil" type; ! (b1) introducing a readily oxidizable metal and / or cerium into the aluminosilicate from step (a) by mixing the aluminosilicate with suitable readily oxidizable metal compounds and / or suitable cerium compounds; or ! (b2) introducing an easily oxidizable metal into the aluminosilicate from step (a) and then introducing cerium into the product obtained in the first part of the stage, or introducing cerium into the aluminosilicate from step (a) and then introducing an easily oxidizable metal into the product obtained in the first part steps, respectively, by mixing with suitable compounds of an easily oxidizable metal and / or suitable compounds of cerium; and! (b3) introducing Zr, Ag, W, La and / or T if necessary